C11111211113313112113313331333131133133313112211211113313232131   >>    C1111121111331311211331333133313113313331311221121111331323213   <<    C11111211113313112113313331333131133133313112211211113313232133   >>      C11111211113313112113313331333131133133313112211211113313232132   >>