C11111211113313112113313331333133313331333132313331333133313113313122232321   >>    C1111121111331311211331333133313331333133313231333133313331311331312223232   <<    C11111211113313112113313331333133313331333132313331333133313113313122232323   >>      C11111211113313112113313331333133313331333132313331333133313113313122232322   >>