C11111211113313112113313331333132313331322121111133313331333133313121133221   >>    C1111121111331311211331333133313231333132212111113331333133313331312113322   <<    C11111211113313112113313331333132313331322121111133313331333133313121133223   >>      C11111211113313112113313331333132313331322121111133313331333133313121133222   >>