1-9: Masculine Gender with -u at the end

1-9: U-kārantapulliṅgo - bhikkhu
1-9: Masculine Gender with -u at the end - bhikkhu

U-kārantapulliṅgobhikkhu-saddo vuccate
The Masculine Gender with -u at the end
is illustrated with the declinable word bhikkhu Similarly declined include: garu, bandhu, pasu, sindhu, sattu, setu, etc. etc.

singular:	plural:	case:
-u	-ū -avo	nominative - paṭhamā
-u	-ū -avo (-ave)	vocative - (paṭhamā)
-uṁ	-ū -avo	accusative - dutiyā
-unā	-ūhi -ūbhi	instrumental - tatiyā
-uno -ussa	-ūnaṁ	dative - catutthī
-unā -uto -usmā -umhā	-ūhi -ūbhi	ablative - pañcamī
-uno -ussa	-ūnaṁ	genitive - chaṭṭhī
-usmiṁ -umhi	-ūsu	locative - sattamī

Sato bhikkhu paribbaje SN 1 v. 49. (nom. sing.)
A mindful monk should wander forth

Te bhikkhū bhagavato paccassosuṁ DN 14, near the beginning, and passim. (nom. plur.)
Te bhikkhavo bhagavato paccassosuṁ
Those monks replied to the Happy One

Paṭibhātu taṁ, bhikkhu, dhammo bhāsituṁ Ud. 5-6. (voc. sing.)
Let it occur to you, monk, to speak on Dhamma

Ekadhammaṁ, bhikkhū pajahatha (voc. plur.)
Ekadhammaṁ, bhikkhavo, pajahatha
Ekadhammaṁ, bhikkhave, pajahatha Iti. 1. Bhikkhave is a so-called Magadhism, perhaps fossilised from the popular language, the form only occurs with this word.
There is one thing, monks, you should abandon

Bhagavā aññataraṁ bhikkhuṁ āmantesi DN 16, and passim. (acc. sing.)
The Happy One addressed a certain monk

Nisajja kho bhagavā bhikkhū āmantesi DN 1, and passim. (acc. plur.)
Nisajja kho bhagavā bhikkhavo āmantesi
While sitting the Happy One addressed the monks

Bhikkhunā Bhikkhunā and bhikkhuno below probably arise through analogy with the atta-type declension. iti paṭisañcikkhitabbaṁ MN 151; III, p. 294. (agent. inst. sing.)
Thus should it be reflected on by a monk

Tehi bhikkhūhi vuccamāno SN 20.10; II, p. 270. (agent. inst. plur.)
Being spoken to by those monks

Kathaṁrūpena ... bhikkhunā gosiṅgasālavanaṁ sobheyya? MN 32; 1, p. 212. (inst. sing.)
By what kind of monk would the Gosiṅga Sāla Wood be beautified?

Sambahulehi bhikkhūhi ... aññā byākatā hoti MN 105, near the beginning; II, 252. (inst. plur.)
Final knowledge had been declared ... by a great many monks

Aññatarassa bhikkhuno ... parivitakko udapādi DN 11; 1, p. 215. (dat. sing.)
Aññatarassa bhikkhussa This form is an analogical formation after the -a declension. ... parivitakko udapādi
A thought arose ... to a certain monk

Atha kho bhikkhūnaṁ etad-ahosi... Vin. Mv. 1; I, p. 91 and passim. (dat. plur.)
Then this occurred to the monks...

Dvāsīti Buddhā gaṇhiṁ, dve sahassāni bhikkhunā (ablative singular)
Dvāsīti Buddhā gaṇhiṁ, dve sahassāni bhikkhuto Th. v. 1024.
Dvāsīti Buddhā gaṇhiṁ, dve sahassāni bhikkhusmā
Dvāsīti Buddhā gaṇhiṁ, dve sahassāni bhikkhumhā
82,000 I took from the Buddha, 2,000 from the monks

Bhikkhūhi saggaṁ labheyyuṁ sappurisā (abl. plur.)
From the monks the good men can attain heaven

Suññāgāraṁ paviṭṭhassa, santacittassa bhikkhuno Dhp. v. 373. (gen. sing.)
Suññāgāraṁ paviṭṭhassa, santacittassa bhikkhussa
For a monk with peaceful mind who has entered an empty place

Bhikkhūnaṁ imaṁ saṅkhiyadhammaṁ viditvā... DN 1; I, p. 2. (gen. plur.)
Having understood this thought of the monks...

Bhikkhusmiṁ mātugāmassa rāgavasena (loc. sing.)
Bhikkhumhi mātugāmassa rāgavasena Vin. A. III, p. 538.
Because of passion for a woman in monks

Coro Aṅgulimālo bhikkhūsu pabbajito hoti (loc. plur.)
The brigand Aṅgulimāla had gone forth amongst the monks