C1111133313331323223313331333133313233232212111133133313132123231   >>    C111113331333132322331333133313331323323221211113313331313212323   <<    C1111133313331323223313331333133313233232212111133133313132123233   >>      C1111133313331323223313331333133313233232212111133133313132123232   >>