nl_tokens: Parity of the corner permutation
pl_tokens: function ( ) { var i , j , m , o , ref , ref1 , ref2 , ref3 , s ; s = 0 ; for ( i = m = ref = DRB , ref1 = URF + 1 ; ( <mask> <= ref1 ? m <= ref1 : m >= ref1 ) ; i = ref <= ref1 ? ++ m : -- m ) { for ( j = o = ref2 = i - 1 , ref3 = URF ; ( ref2 <= ref3 ? o <= ref3 : o >= ref3 ) ; j = ref2 <= ref3 ? ++ o : -- o ) { if ( this . cp [ j ] > this . cp [ i ] ) { s ++ ; } } } return s % 2 ; }