C11111211113313112113313331333133313331333132313331333133313331323132211313331   >>    C1111121111331311211331333133313331333133313231333133313331333132313221131333   <<    C11111211113313112113313331333133313331333132313331333133313331323132211313333   >>      C11111211113313112113313331333133313331333132313331333133313331323132211313332   >>