C312312111133131121333133313113313331333133313331333131323313231   >>    C31231211113313112133313331311331333133313331333133313132331323   <<    C312312111133131121333133313113313331333133313331333131323313233   >>      C312312111133131121333133313113313331333133313331333131323313232   >>