C121212231313232233131323223313231333132321123232221133131331111   >>    C12121223131323223313132322331323133313232112323222113313133111   <<    C121212231313232233131323223313231333132321123232221133131331113   >>      C121212231313232233131323223313231333132321123232221133131331112   >>