C11111211113313112113313331333131133133313222313331323132211111   >>    C1111121111331311211331333133313113313331322231333132313221111   <<    C11111211113313112113313331333131133133313222313331323132211113   >>      C11111211113313112113313331333131133133313222313331323132211112   >>