C111123313331323113313331333133313331323133112113313113313111111   >>    C11112331333132311331333133313331333132313311211331311331311111   <<    C111123313331323113313331333133313331323133112113313113313111113   >>      C111123313331323113313331333133313331323133112113313113313111112   >>