C11111211113313112113313331333132313331322121111133313331121132211   >>    C1111121111331311211331333133313231333132212111113331333112113221   <<    C11111211113313112113313331333132313331322121111133313331121132213   >>      C11111211113313112113313331333132313331322121111133313331121132212   >>