C11111211113313112113313331333131133133313331333132212111112111   >>    C1111121111331311211331333133313113313331333133313221211111211   <<    C11111211113313112113313331333131133133313331333132212111112113   >>      C11111211113313112113313331333131133133313331333132212111112112   >>