C111123313331323113313331333133313121111133112121111331311211331323132131   >>    C11112331333132311331333133313331312111113311212111133131121133132313213   <<    C111123313331323113313331333133313121111133112121111331311211331323132133   >>      C111123313331323113313331333133313121111133112121111331311211331323132132   >>