C11111211113313112113313331333133312111113331333133313331121212112232321   >>    C1111121111331311211331333133313331211111333133313331333112121211223232   <<    C11111211113313112113313331333133312111113331333133313331121212112232323   >>      C11111211113313112113313331333133312111113331333133313331121212112232322   >>