C111123313331323113313331333133313331323133112113313233313111221   >>    C11112331333132311331333133313331333132313311211331323331311122   <<    C111123313331323113313331333133313331323133112113313233313111223   >>      C111123313331323113313331333133313331323133112113313233313111222   >>