C12313211232233312111111312111133133313331323133313332322321122321313221   >>    C1231321123223331211111131211113313331333132313331333232232112232131322   <<    C12313211232233312111111312111133133313331323133313332322321122321313223   >>      C12313211232233312111111312111133133313331323133313332322321122321313222   >>