C11111211113313112113313331333133313331333132313331333133313113313211231211321   >>    C1111121111331311211331333133313331333133313231333133313331311331321123121132   <<    C11111211113313112113313331333133313331333132313331333133313113313211231211323   >>      C11111211113313112113313331333133313331333132313331333133313113313211231211322   >>