C111123313331323113313331333133313331323133112113313221211111333131111   >>    C11112331333132311331333133313331333132313311211331322121111133313111   <<    C111123313331323113313331333133313331323133112113313221211111333131113   >>      C111123313331323113313331333133313331323133112113313221211111333131112   >>