C111123313331323113313331333133313331323131211113313113313132132321   >>    C11112331333132311331333133313331333132313121111331311331313213232   <<    C111123313331323113313331333133313331323131211113313113313132132323   >>      C111123313331323113313331333133313331323131211113313113313132132322   >>