C11111211113313112113313331333131133133313112211211113313231233132212331   >>    C1111121111331311211331333133313113313331311221121111331323123313221233   <<    C11111211113313112113313331333131133133313112211211113313231233132212333   >>      C11111211113313112113313331333131133133313112211211113313231233132212332   >>