C3123223313331322121111331333133313331333121211113313332213331323133322221   >>    C312322331333132212111133133313331333133312121111331333221333132313332222   <<    C3123223313331322121111331333133313331333121211113313332213331323133322223   >>      C3123223313331322121111331333133313331333121211113313332213331323133322222   >>