C1111133313331323223313331333133313331322133313331323221211122221   >>    C111113331333132322331333133313331333132213331333132322121112222   <<    C1111133313331323223313331333133313331322133313331323221211122223   >>      C1111133313331323223313331333133313331322133313331323221211122222   >>