C1111233131211111211113313331333133313232212111133133311231322321   >>    C111123313121111121111331333133313331323221211113313331123132232   <<    C1111233131211111211113313331333133313232212111133133311231322323   >>      C1111233131211111211113313331333133313232212111133133311231322322   >>