MUST HAVE + past participle

In the English Grammar Profile, there are essentially the same two points in the category of Modality at B2 for the same form.

Point 144 is defined as:

DEDUCTIONS AND CONCLUSIONS: perfect form of ‘must’ to make deductions about the past.

and point 166:

PAST AFFIRMATIVE must have’ + ‘-ed’.

For example:

He had come such a long way, and his dream must have seemed so close that he could hardly fail to grasp it.

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A search on iWeb for must have _vvn

1 MUST HAVE COMPLETED 8757
2 MUST HAVE TAKEN 4458
3 MUST HAVE FELT 4262
4 MUST HAVE MADE 3276
5 MUST HAVE KNOWN 3266
6 MUST HAVE SEEN 2813
7 MUST HAVE MISSED 2648

You must have missed him.

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8 MUST HAVE THOUGHT 2516
9 MUST HAVE COME 2511
10 MUST HAVE GONE 2305

You must have gone to a very good college.

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11 MUST HAVE GOTTEN 2075

12 MUST HAVE SEEMED 1995

  ABC News

Young farmers say flexibility has driven their successful transition out of dairy into mixed cropping at Innot Hot Springs – Queensland Country Hour

… in the green rolling hills of the Atherton Tableland in far north Queensland to venture further west, it must have seemed a huge gamble.

13 MUST HAVE EARNED 1868
14 MUST HAVE HEARD 1858
15 MUST HAVE LOOKED 1807
16 MUST HAVE RECEIVED 1720
17 MUST HAVE WORKED 1638
18 MUST HAVE HAPPENED 1544
19 MUST HAVE PASSED 1422