C21221212121211331322132313132313231313232233132313223313232112323132322321   >>    C2122121212121133132213231313231323131323223313231322331323211232313232232   <<    C21221212121211331322132313132313231313232233132313223313232112323132322323   >>      C21221212121211331322132313132313231313232233132313223313232112323132322322   >>