单词的上下文

对于给定的文本文件，按字母顺序显示某些单词和它的上下文，以及它们出现的页码。假设每页45行文字。假设上下文单词包含前面两个词及后面两个词。忽略标点符号。例如，对于给定的《傲慢与偏见》，单词“concealment”和“hurt”的上下文结果输出如下：

pcrhaps this concealment this disguise-150

purpose of concealment for no-207

pride was hurt he suffered-87

must bc hurt by such-95

and are hurt ifi-103

pride been hurt by my-115

must, be hurt by such-157

infamy was hurt and distressed-248

（给定单词的）上下文任务中的单词有：concealment、discontented、hurt、agitation、mortifying、reproach、unexpected、indignation、mistake和confusion。