C111123313121111121111331333132313331333133112113313133313331323132233231   >>    C11112331312111112111133133313231333133313311211331313331333132313223323   <<    C111123313121111121111331333132313331333133112113313133313331323132233233   >>      C111123313121111121111331333132313331333133112113313133313331323132233232   >>