C11112331312111112111133133313331333131333132311331323133313221232332311   >>    C1111233131211111211113313331333133313133313231133132313331322123233231   <<    C11112331312111112111133133313331333131333132311331323133313221232332313   >>      C11112331312111112111133133313331333131333132311331323133313221232332312   >>