Declension -ī -ū

SomDev sent me the following sanskrit verse that I think is very useful in this context.

Memorize this verse for the seven exceptional cases where the nom. sg. of -ī stems retains the visarga:

avī-tarī-tantrī-lakṣmī-dhī-śrī-hrīṇām udāhṛtaḥ /
saptānām eva dhātūnāṃ si-lopo na kadā cana //

Stem	dhī 'thought'	bhū 'earth'	nad-ī 'river'	vadh-ū 'woman'
	Singular
N.	dhī-ḥ	bhū-ḥ	nadī	vadhū-ḥ
Ac.	dhiy-am	bhuv-am	nadī-m	vadhū-m
I.	dhiy-ā	bhuv-ā	nady-ā	vadhv-ā
D.	dhiy-e	bhuv-e	nady-ai	vadhv-ai
Ab.	dhiy-aḥ	bhuv-aḥ	nady-āḥ	vadhv-āḥ
G.	dhiy-aḥ	bhuv-aḥ	nady-āḥ	vadhv-āḥ
L.	dhiy-i	bhuv-i	nady-ām	vadhv-ām
V.	dhī-ḥ	bhū-ḥ	nadi	vadhu
	Dual
N.	dhiy-au	bhuv-au	nady-au	vadhv-au
Ac.	dhiy-au	bhuv-au	nady-au	vadhv-au
I.	dhī-bhyām	bhū-bhyām	nadī-bhyām	vadhū-bhyām
D.	dhī-bhyām	bhū-bhyām	nadī-bhyām	vadhū-bhyām
Ab.	dhī-bhyām	bhū-bhyām	nadī-bhyām	vadhū-bhyām
G.	dhiy-oḥ	bhuv-oḥ	nady-oḥ	vadhv-oḥ
L.	dhiy-oḥ	bhuv-oḥ	nady-oḥ	vadhv-oḥ
V.	dhiy-au	bhuv-au	nady-au	vadhv-au
	Plural
N.	dhiy-aḥ	bhuv-aḥ	nady-aḥ	vadhv-aḥ
Ac.	dhiy-aḥ	bhuv-aḥ	nadīḥ	vadhūḥ
I.	dhī-bhiḥ	bhū-bhiḥ	nadī-bhiḥ	vadhū-bhih
D.	dhī-bhyaḥ	bhū-bhyaḥ	nadī-bhyaḥ	vadhū-bhyaḥ
Ab.	dhī-bhyaḥ	bhū-bhyaḥ	nadī-bhyaḥ	vadhū-bhyaḥ
G.	dhiy-ām	bhuv-ām	nadī-n-ām	vadhū-n-ām
L.	dhī-ṣu	bhū-ṣu	nadī-ṣu	vadhū-ṣu
V.	dhiy-aḥ	bhuv-aḥ	nady-aḥ	vadhv-aḥ