C11111211113313112113313331333133313331333132212111133133313331323232233131   >>    C1111121111331311211331333133313331333133313221211113313331333132323223313   <<    C11111211113313112113313331333133313331333132212111133133313331323232233133   >>      C11111211113313112113313331333133313331333132212111133133313331323232233132   >>