C1111233131211111211113313331333133313331313221131211113313233211112331   >>    C111123313121111121111331333133313331333131322113121111331323321111233   <<    C1111233131211111211113313331333133313331313221131211113313233211112333   >>      C1111233131211111211113313331333133313331313221131211113313233211112332   >>