C111123313331323113313331333133313121111133112121111331311211331323132231221   >>    C11112331333132311331333133313331312111113311212111133131121133132313223122   <<    C111123313331323113313331333133313121111133112121111331311211331323132231223   >>      C111123313331323113313331333133313121111133112121111331311211331323132231222   >>