C11111211113313112113313331333133313331312322121111133313232131   >>    C1111121111331311211331333133313331333131232212111113331323213   <<    C11111211113313112113313331333133313331312322121111133313232133   >>      C11111211113313112113313331333133313331312322121111133313232132   >>