C312312111111331312111133132313331333132313331323133313331322112211233131   >>    C31231211111133131211113313231333133313231333132313331333132211221123313   <<    C312312111111331312111133132313331333132313331323133313331322112211233133   >>      C312312111111331312111133132313331333132313331323133313331322112211233132   >>