C121212231313232233131323223313231333132321123232221133131333231   >>    C12121223131323223313132322331323133313232112323222113313133323   <<    C121212231313232233131323223313231333132321123232221133131333233   >>      C121212231313232233131323223313231333132321123232221133131333232   >>