C21221212121211331322132313132313132313232233132313223313233313232213133111   >>    C2122121212121133132213231313231313231323223313231322331323331323221313311   <<    C21221212121211331322132313132313132313232233132313223313233313232213133113   >>      C21221212121211331322132313132313132313232233132313223313233313232213133112   >>