C111123313331323113313331333133313331323133112113313113313122131211   >>    C11112331333132311331333133313331333132313311211331311331312213121   <<    C111123313331323113313331333133313331323133112113313113313122131213   >>      C111123313331323113313331333133313331323133112113313113313122131212   >>