C11111211113313112113313331333133313331333131211113313331333132211211312331   >>    C1111121111331311211331333133313331333133313121111331333133313221121131233   <<    C11111211113313112113313331333133313331333131211113313331333132211211312333   >>      C11111211113313112113313331333133313331333131211113313331333132211211312332   >>