C11111211113313112113313331333133313331333131211113313331322112123331   >>    C1111121111331311211331333133313331333133313121111331333132211212333   <<    C11111211113313112113313331333133313331333131211113313331322112123333   >>      C11111211113313112113313331333133313331333131211113313331322112123332   >>