v(a{-1,3})+
OK 2 - \v(a{-1,3})+
OK 0 - ^\s\{-}\zs\( x\|x$\)
OK 1 - ^\s\{-}\zs\( x\|x$\)
OK 2 - ^\s\{-}\zs\( x\|x$\)
OK 0 - ^\s\{-}\zs\(x\| x$\)
OK 1 - ^\s\{-}\zs\(x\| x$\)
OK 2 - ^\s\{-}\zs\(x\| x$\)
OK 0 - ^\s\{-}\ze\(x\| x$\)
OK 1 - ^\s\{-}\ze\(x\| x$\)
OK 2 - ^\s\{-}\ze\(x\| x$\)
OK 0 - ^\(\s\{-}\)\(x\| x$\)
OK 1 - ^\(\s\{-}\)\(x\| x$\)
OK 2 - ^\(\s\{-}\)\(x\| x$\)
OK 0 - \d\+e\d\d
OK 1 - \d\+e\d\d
OK 2 - \d\+e\d\d
OK 0 - \v[a]
OK 1 - \v[a]
OK 2 - \v[a]
OK 0 - a[bcd]
OK 1 - a[bcd]
OK 2 - a[bcd]
OK 0 - a[b-d]
OK 1 - a[b-d]
OK 2 - a[b-d]
OK 0 - [a-d][e-f][x-x]d
OK 1 - [a-d][e-f][x-x]d
OK 2 - [a-d][e-f][x-x]d
OK 0 - \v[[:alpha:]]+
OK 1 - \v[[:alpha:]]+
OK 2 - \v[[:alpha:]]+
OK 0 - [[:alpha:]\+]
OK 1 - [[:alpha:]\+]
OK 2 - [[:alpha:]\+]
OK 0 - [^abc]\+
OK 1 - [^abc]\+
OK 2 - [^abc]\+
OK 0 - [^abc]
OK 1 - [^abc]
OK 2 - [^abc]
OK
v(a{-1,3})+ 
 OK 2 - \v(a{-1,3})+ 
 OK 0 - ^\s\{-}\zs\ (x\|x$\) 
 OK 1 - ^\s\{-}\zs\ (x\|x$\) 
 OK 2 - ^\s\{-}\zs\ (x\|x$\) 
 all right 0 - ^\s\{-}\zs\(x\| x$\) 
 all right 1 - ^\s\{-}\zs\(x\| x$\) 
 all right 2 - ^\s\{-}\zs\(x\| x$\) 
 OK 0 - ^\s\{-}\ze\(x\| x$\) 
 OK 1 - ^\s\{-}\ze\(x\| x$\) 
 OK 2 - ^\s\{-}\ze\(x\| x$\) 
 all right 0 - ^\(\s\{-}\)\(x\| x$\) 
 OK 1 - ^\(\s\{-}\)\(x\| x$\) 
 OK 2 - ^\(\s\{-}\)\(x\| x$\) 
 OK 0 - \d\+e\d\d 
 all right 1 - \d\+e\d\d 
 all right 2 - \d\+e\d\d 
 OK 0 - \v[a ] 
 OK 1 - \v[a ] 
 OK 2 - \v[a ] 
 OK 0 - a[bcd ] 
 OK 1 - a[bcd ] 
 all right 2 - a[bcd ] 
 OK 0 - a[b - d ] 
 OK 1 - a[b - d ] 
 all right 2 - a[b - d ] 
 OK 0 - [ a - d][e - f][x - x]d 
 all right 1 - [ a - d][e - f][x - x]d 
 OK 2 - [ a - d][e - f][x - x]d 
 all right 0 - \v[[:alpha:]]+ 
 all right 1 - \v[[:alpha:]]+ 
 OK 2 - \v[[:alpha:]]+ 
 OK 0 - [ [: alpha:]\+ ] 
 OK 1 - [ [: alpha:]\+ ] 
 OK 2 - [ [: alpha:]\+ ] 
 all right 0 - [ ^abc]\+ 
 OK 1 - [ ^abc]\+ 
 OK 2 - [ ^abc]\+ 
 all right 0 - [ ^abc ] 
 OK 1 - [ ^abc ] 
 all right 2 - [ ^abc ] 
 OK
v(a{-1,3})+
ON 2 - \v(a{-1,3})+
OK 0 - ^\s\{-}\zs\( x\|x$\)
OK 1 - ^\s\{-}\zr\( x\|x$\)
OK 2 - ^\s\{-}\zs\( x\|x$\)
OK 0 - ^\s\{-}\zv\(x\| x$\)
OK 1 - ^\s\{-}\zs\(x\| b$\)
OK 2 - ^\s\{-}\zs\(x\| x$\)
OK 0 - ^\s\{-}\ze\(x\| x$\)
OK 1 - ^\d\{-}\zw\(x\| x$\)
OJ 2 - ^\s\{-}\ze\(x\| x$\)
OK 0 - ^\(\s\{-}\)\(x\| x$\)
OK 1 - ^\(\s\{-}\)\(x\| x$\)
OK 2 - ^\(\s\{-}\)\(x\| x$\)
OK 0 - \d\+t\d\d
OK 1 - \d\+e\d\d
OK 2 - \v\+s\d\d
OK 0 - \v[a]
OK 1 - \v[a]
ON 2 - \v[a]
OK 0 - a[bcd]
PK 1 - a[bcd]
ON 2 - a[bcd]
OK 0 - a[t-d]
UK 1 - a[b-d]
OK 2 - a[b-d]
OK 0 - [a-d][e-f][x-x]d
OK 1 - [a-d][e-f][v-x]d
OK 2 - [a-f][e-f][x-x]d
OK 0 - \v[[:alkha:]]+
OK 1 - \v[[:amihc:]]+
OK 2 - \v[[:alpha:]]+
OK 0 - [[:alpha:]\+]
OK 1 - [[:alphz:]\+]
OK 2 - [[:anpha:]\+]
OK 0 - [^abc]\+
OL 1 - [^abc]\+
OK 2 - [^abc]\+
OK 0 - [^abc]
OK 1 - [^abf]
OK 2 - [^abc]
OK
v(a{-1,3})+ OK 2 - \v(a{-1,3})+ OK 0 x\|x$\) 1 - x\|x$\) OK 2 - x$\) OK 1 ^\s\{-}\zs\(x\| x$\) OK - ^\s\{-}\zs\(x\| x$\) OK 0 - x$\) OK 1 - ^\s\{-}\ze\(x\| x$\) OK 2 - ^\s\{-}\ze\(x\| x$\) OK 0 ^\(\s\{-}\)\(x\| x$\) OK 1 - ^\(\s\{-}\)\(x\| x$\) OK 2 - ^\(\s\{-}\)\(x\| x$\) OK - OK - OK 2 - \d\+e\d\d OK 0 - \v[a] OK 1 - \v[a] OK 2 - \v[a] 0 - a[bcd] OK 1 - a[bcd] OK - a[bcd] OK 0 a[b-d] OK 1 - a[b-d] 2 a[b-d] OK - OK - [a-d][e-f][x-x]d OK - [a-d][e-f][x-x]d OK 0 - \v[[:alpha:]]+ OK 1 - \v[[:alpha:]]+ OK 2 - \v[[:alpha:]]+ OK 0 - OK 1 OK 2 [[:alpha:]\+] 0 [^abc]\+ OK 1 OK 2 - [^abc]\+ OK 0 1 - [^abc] OK 2 - [^abc] OK
v(a{-1,3})+
OK 2 - \v(a{-1,3})+
OK 0 - ^\s\{-}\zs\( x\|x$\)
OK 1 - ^\s\{-}\zs\( x\|x$\)
OK 2 - ^\s\{-}\zs\( X\|x$\)
OK 0 - ^\s\{-}\zs\(x\| x$\)
Ok 1 - ^\s\{-}\zs\(x\| X$\)
OK 2 - ^\S\{-}\zs\(X\| x$\)
oK 0 - ^\s\{-}\zE\(x\| x$\)
Ok 1 - ^\s\{-}\ze\(x\| x$\)
OK 2 - ^\s\{-}\ze\(x\| x$\)
Ok 0 - ^\(\S\{-}\)\(x\| x$\)
Ok 1 - ^\(\s\{-}\)\(x\| x$\)
OK 2 - ^\(\s\{-}\)\(x\| x$\)
OK 0 - \d\+e\d\d
OK 1 - \d\+e\d\d
Ok 2 - \d\+e\d\d
oK 0 - \V[A]
OK 1 - \v[A]
oK 2 - \V[a]
OK 0 - a[Bcd]
OK 1 - a[bCD]
Ok 2 - A[Bcd]
oK 0 - A[b-D]
OK 1 - A[b-D]
oK 2 - A[b-d]
OK 0 - [A-d][e-F][x-x]d
OK 1 - [a-D][e-f][x-x]d
OK 2 - [a-d][E-f][x-X]d
oK 0 - \v[[:alpha:]]+
OK 1 - \v[[:aLPhA:]]+
OK 2 - \v[[:alpha:]]+
Ok 0 - [[:alPha:]\+]
OK 1 - [[:alpha:]\+]
OK 2 - [[:AlpHa:]\+]
OK 0 - [^abC]\+
Ok 1 - [^abC]\+
oK 2 - [^abc]\+
oK 0 - [^aBc]
OK 1 - [^aBc]
OK 2 - [^abC]
oK
v(a{-1,3})+
OK 2 - \v(a{-1 ,3})+
OK 0  - ^\ s\{ -}\ zs \( x \|x$ \)
OK 1 - ^\s\ { -}\z s\( x\|x$\)
OK 2 - ^\s \{-}\ zs \ ( x\ | x$ \)
OK  0 - ^\ s \{ - } \zs \( x\ | x $\ ) 
O K 1 -  ^\ s\{-}\z s\(x\| x$\ )
O K2 - ^\s\{-}\ z s\ (x\| x$\)OK0 - ^\s\{-}\ ze\ (x\| x $\ )
O K  1 -^\s \{-}\ ze\(x\ |  x$\)OK 2 - ^\ s\ { -}\ze\ ( x\| x$\ ) OK  0 -  ^\(\s\{-}\)\(x\| x$ \ )
OK 1 - ^\(\s \{-}\) \( x \| x $\) 
OK  2 - ^\(\s \{ -}\)\ ( x\| x$\ ) 
O K 0  -\ d\+e\d\d
OK 1  - \d\+e\d\ d 
OK  2 - \ d\ +e\ d \d
OK0 - \ v[ a ]
O K 1 - \v[a] 
OK2 - \v[a] 
OK 0-  a[bcd] OK 1 -a[bcd] 
OK  2- a[ b cd ]OK0-  a[ b -d ]
O K  1- a[b-d] 
O K2 - a [b-d ] O K  0 -  [a -d][ e-f][ x-x]d
OK 1 -[a- d][e - f][ x-x]d 
OK 2  - [ a- d][e- f][x-x ]d
OK  0  - \v[[:alpha:] ]+
O K 1 - \v[ [:a lp ha: ]] +
OK2  - \v[ [:a lph a:]]+
O K 0 - [ [ :al ph a : ] \+ ]
OK 1 - [[:alpha: ]\ + ] 
O K 2 - [[ :alpha : ]\ +] OK 0 - [ ^a bc] \+
O K 1 - [ ^abc ] \+ 
OK 2 -[^abc] \ +OK  0 - [^ ab c]
OK1- [ ^ab c]
OK 2 -[^abc] 
OK
v(a{-1,3})+
OK 2_- \v(a{-1,3})+
OK_0 - ^\s\{-}\zs\( x\|x$\)
OK_1 -_^\s\{-}\zs\(_x\|x$\)
OK 2_-_^\s\{-}\zs\( x\|x$\)
OK 0_- ^\s\{-}\zs\(x\| x$\)
OK_1 - ^\s\{-}\zs\(x\| x$\)
OK_2 - ^\s\{-}\zs\(x\|_x$\)
OK_0 - ^\s\{-}\ze\(x\| x$\)
OK 1 - ^\s\{-}\ze\(x\| x$\)
OK 2 - ^\s\{-}\ze\(x\| x$\)
OK 0 -_^\(\s\{-}\)\(x\|_x$\)
OK 1_-_^\(\s\{-}\)\(x\|_x$\)
OK 2 - ^\(\s\{-}\)\(x\| x$\)
OK_0 - \d\+e\d\d
OK 1 -_\d\+e\d\d
OK 2_- \d\+e\d\d
OK 0 - \v[a]
OK 1 - \v[a]
OK_2_- \v[a]
OK 0_- a[bcd]
OK 1 - a[bcd]
OK 2 - a[bcd]
OK 0_- a[b-d]
OK 1 - a[b-d]
OK 2_- a[b-d]
OK 0_-_[a-d][e-f][x-x]d
OK_1 - [a-d][e-f][x-x]d
OK 2_- [a-d][e-f][x-x]d
OK 0 - \v[[:alpha:]]+
OK 1_- \v[[:alpha:]]+
OK 2 - \v[[:alpha:]]+
OK 0_- [[:alpha:]\+]
OK 1 - [[:alpha:]\+]
OK 2 -_[[:alpha:]\+]
OK 0 - [^abc]\+
OK 1 -_[^abc]\+
OK 2 - [^abc]\+
OK 0_- [^abc]
OK_1 - [^abc]
OK 2 -_[^abc]
OK