The table below presents an aligned extract of verses or verselets in Nu34-18, Nu34-29. Both verses/verselets discuss the tribal representatives who participated in the apportionment of Israel to the Jews. The alignment justifies the Rashi comment that: The conjugation of the two verbs in Nu34-18,Nu34-29 are different. Nu34-18 uses a conjugation indicating an active voice while Nu34-29 uses a conjugation indicating an intensive voice. The alignment suggests that the two voices have different meanings. We translate the active voice as indicating inheritance and we translate the intensive voice (Piel) as indicating causation, transfer of inheritance. In other words, the representatives besides causing transference of inheritance of Israel to their respective tribes also particpated in the inheritance and inherited land with their tribes [I think the emphasis is that the representatives were not outside the apportionment process but rather part of it. Good reps should particpate and not be non-involved.]

Verse	Text of Verse	Rashi comment
Nu34-18	And you shall take one representative of every tribe, to inherit the land.	The conjugation of the two verbs in Nu34-18,Nu34-29 are different. Nu34-18 uses a conjugation indicating an active voice while Nu34-29 uses a conjugation indicating an intensive voice. The alignment suggests that the two voices have different meanings. We translate the active voice as indicating inheritance and we translate the intensive voice (Piel) as indicating causation, transfer of inheritance. In other words, the representatives besides causing transference of inheritance of Israel to their respective tribes also particpated in the inheritance and inherited land with their tribes [I think the emphasis is that the representatives were not outside the apportionment process but rather part of it. Good reps should particpate and not be non-involved.]
Nu34-29	These are they whom the Lord commanded to transfer the inheritance to the people of Israel in the land of Canaan.

Advanced Rashi: This Rashi can equivalantly be derived by the grammar principle since Nu34-18 uses the active voice while Nu34-29 uses the intensive voice. As is well known the intensive voice can sometimes refer to causative action (The Piel and Hifil voices can both indicate causality.) I have classified this Rashi as primarily using the alignment method since the intensive voice by itself does not imply causality. Rather it is the combination of different voices plus the alignment that drives the Rashi inference.