C313212111113331323312111133133313331333133313331333133313231323132332211   >>    C31321211111333132331211113313331333133313331333133313331323132313233221   <<    C313212111113331323312111133133313331333133313331333133313231323132332213   >>      C313212111113331323312111133133313331333133313331333133313231323132332212   >>