C21221212121211331322132313132313132313232233132313223313231131111   >>    C2122121212121133132213231313231313231323223313231322331323113111   <<    C21221212121211331322132313132313132313232233132313223313231131113   >>      C21221212121211331322132313132313132313232233132313223313231131112   >>