C111123313121111121111331333133313331333112221211111333131121133232321333131   >>    C11112331312111112111133133313331333133311222121111133313112113323232133313   <<    C111123313121111121111331333133313331333112221211111333131121133232321333133   >>      C111123313121111121111331333133313331333112221211111333131121133232321333132   >>