C21221212121211331322132313132313132313232233132313223313231313231331121321   >>    C2122121212121133132213231313231313231323223313231322331323131323133112132   <<    C21221212121211331322132313132313132313232233132313223313231313231331121323   >>      C21221212121211331322132313132313132313232233132313223313231313231331121322   >>