C11111211113313112113313331333132313331322121111133313331123232311   >>    C1111121111331311211331333133313231333132212111113331333112323231   <<    C11111211113313112113313331333132313331322121111133313331123232313   >>      C11111211113313112113313331333132313331322121111133313331123232312   >>