C11111211113313112113313331333131133133313331323133313113313331333133313222211   >>    C1111121111331311211331333133313113313331333132313331311331333133313331322221   <<    C11111211113313112113313331333131133133313331323133313113313331333133313222213   >>      C11111211113313112113313331333131133133313331323133313113313331333133313222212   >>