C111123313331323113313331333133313331323133112113313221211111133131111   >>    C11112331333132311331333133313331333132313311211331322121111113313111   <<    C111123313331323113313331333133313331323133112113313221211111133131113   >>      C111123313331323113313331333133313331323133112113313221211111133131112   >>