C11111211113313112113313331333133313331333132313331333133313331311211313213321   >>    C1111121111331311211331333133313331333133313231333133313331333131121131321332   <<    C11111211113313112113313331333133313331333132313331333133313331311211313213323   >>      C11111211113313112113313331333133313331333132313331333133313331311211313213322   >>