C11111211113313112113313331333133313331312322121111133313331331123311321   >>    C1111121111331311211331333133313331333131232212111113331333133112331132   <<    C11111211113313112113313331333133313331312322121111133313331331123311323   >>      C11111211113313112113313331333133313331312322121111133313331331123311322   >>