C312312111111331312111133133313331322331333133313331323331333222221   >>    C31231211111133131211113313331333132233133313331333132333133322222   <<    C312312111111331312111133133313331322331333133313331323331333222223   >>      C312312111111331312111133133313331322331333133313331323331333222222   >>