C12313211232233312111111312111133133313223332233131113112112321   >>    C1231321123223331211111131211113313331322333223313111311211232   <<    C12313211232233312111111312111133133313223332233131113112112323   >>      C12313211232233312111111312111133133313223332233131113112112322   >>