C1111133313331323223313331333133313331333131211113313331322331333133311232211   >>    C111113331333132322331333133313331333133313121111331333132233133313331123221   <<    C1111133313331323223313331333133313331333131211113313331322331333133311232213   >>      C1111133313331323223313331333133313331333131211113313331322331333133311232212   >>