if digit is a or ( a - 1 ) then increase left index ' s ▁ count / ▁ ( case , ▁ when ▁ this ▁ weight ▁ is ▁ transferred ▁ to ▁ T ' s side )
if ( baseForm [ i ] == a || baseForm [ i ] == ( a - 1 ) ) baseForm [ i + 1 ] += 1 ; }