C21221212121211331322132313132313231313232233132313223313231311233111   >>    C2122121212121133132213231313231323131323223313231322331323131123311   <<    C21221212121211331322132313132313231313232233132313223313231311233113   >>      C21221212121211331322132313132313231313232233132313223313231311233112   >>