C11111211113313112113313331333132313331322121111133313331121133132331221   >>    C1111121111331311211331333133313231333132212111113331333112113313233122   <<    C11111211113313112113313331333132313331322121111133313331121133132331223   >>      C11111211113313112113313331333132313331322121111133313331121133132331222   >>