C1212121231123232233131323223313232213231333131122233132322131111   >>    C121212123112323223313132322331323221323133313112223313232213111   <<    C1212121231123232233131323223313232213231333131122233132322131113   >>      C1212121231123232233131323223313232213231333131122233132322131112   >>