C1111233133313231133133313331333132313331323113121111331333132232211   >>    C111123313331323113313331333133313231333132311312111133133313223221   <<    C1111233133313231133133313331333132313331323113121111331333132232213   >>      C1111233133313231133133313331333132313331323113121111331333132232212   >>