C1111233131211111211113313231333133313331323331333131133132321221   >>    C111123313121111121111331323133313331333132333133313113313232122   <<    C1111233131211111211113313231333133313331323331333131133132321223   >>      C1111233131211111211113313231333133313331323331333131133132321222   >>