C1111133313331323223313331333133313331323131211113313112331333112211231321   >>    C111113331333132322331333133313331333132313121111331311233133311221123132   <<    C1111133313331323223313331333133313331323131211113313112331333112211231323   >>      C1111133313331323223313331333133313331323131211113313112331333112211231322   >>