C1111133313331323223313331333133313331322133313331323131233231211   >>    C111113331333132322331333133313331333132213331333132313123323121   <<    C1111133313331323223313331333133313331322133313331323131233231213   >>      C1111133313331323223313331333133313331322133313331323131233231212   >>