C31232132313132313123231323132313331313232233132322131133132313231232211   >>    C3123213231313231312323132313231333131323223313232213113313231323123221   <<    C31232132313132313123231323132313331313232233132322131133132313231232213   >>      C31232132313132313123231323132313331313232233132322131133132313231232212   >>