C11111211113313112113313331333133312111113331333133313331121221   >>    C1111121111331311211331333133313331211111333133313331333112122   <<    C11111211113313112113313331333133312111113331333133313331121223   >>      C11111211113313112113313331333133312111113331333133313331121222   >>