C11111211113313112113313331333133312111113331333133313331121133132211311321   >>    C1111121111331311211331333133313331211111333133313331333112113313221131132   <<    C11111211113313112113313331333133312111113331333133313331121133132211311323   >>      C11111211113313112113313331333133312111113331333133313331121133132211311322   >>