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 . get ( i ) == a || baseForm . get ( i ) == ( a - 1 ) ) { baseForm . add ( i + 1 , baseForm . get ( i + 1 ) + 1 ) ; } }