C11111211113313112113313331333131133133313222313331323221211211   >>    C1111121111331311211331333133313113313331322231333132322121121   <<    C11111211113313112113313331333131133133313222313331323221211213   >>      C11111211113313112113313331333131133133313222313331323221211212   >>