C11111333133313232233133313331333133313221333133313232212111111211211   >>    C1111133313331323223313331333133313331322133313331323221211111121121   <<    C11111333133313232233133313331333133313221333133313232212111111211213   >>      C11111333133313232233133313331333133313221333133313232212111111211212   >>