First, we must compare, which pronomes of the todays speaking iranian languages are the most old forms and are to Old Iranian at nearest. Let us compare the pronome for "I".
Note: All examples are in the kurdish alphabet, but High Iranian Examples have not dumb "i", only always normal "i", because this is not iranic.
1. Person Singular Rectus
English Meaning: I
Avesta: ezêm, Old Persian: edêm (from Old Iranian < ezêm), Parthian: ez, Sanskrit: ehem, from Proto-Indoeuropean: eghom, in relation with Latin: ego, Old English: ic (Old Germanic: ik > German: ich), French: je
In todays iranian languages:
Persian: did lost it and replaced it with the obliquus pronome "mine"
Kurdish, Zazaki, Talysch: ez
Ossetian: îz
Pashto: ze
So, we take for High Iranian Language: ez for 1. Pers. sing. Rectus
1. Person Singular Obliquus
English Meaning: My, Me, Mine
Avesta: mene, Old Persian: menâ, Parthian, Middle Persian: men
Persian: men
Balochi: mân
Kurdish, Zazaki: min
So, we take for High Iranian Language: men for 1. Pers. sing. Obliquus
1. Person Plural Rectus
English Meaning: We
Avesta: ehmā-, Parthian: emâ
Persian, Balochi Zazaki: mâ, Judeo-Persian: emâ
Kurdish: ême
Hawrami, Talysh: ema
So, we take for High Iranian Language: ema for 1. Pers. plur. Rectus
1. Person Plural Obliquus
English Meaning: Us, Our
Avesta: ehmā-, Parthian: emâ
Persian, Balochi Zazaki: mâ
Kurdish: me
So, we take for High Iranian Language: ma for 1. Pers. plur. Obliquus
2. Person Singular Rectus
English Meaning: you
Avesta: tû, Proto-Indoeuropean: tu, French: tu, Latin: tu
Persian: to
Kurdish: tu, Zazaki: tu/ti
So, we take for High Iranian Language: tu for 2. Pers. sing. Rectus
2. Person Singular Obliquus
English Meaning: your, you
Old Iranic: ???, South Slavic: te, Spanish: te, Proto-Indoeuropean: *t(w)eino-, German: dein
Persian: to
Kurdish, Taylsch: te, Zazaki: to/ti/te
Balochi: tehwo, Pashto: tâ
So, my suggestion for High Iranian is: te for 2. Pers. sing. Obliquus
2. Person Plural Rectus
English Meaning: you (plural)
Avesta yuşmâ-, Parthian: eşmâ
Persian: şoma
Kurdish: êwe / hûn, Zazaki: şima (read: şma), Talysch: şema
Balochi: şuma
So, we take for High Iranian Language: êşma (Kurdish ê + Zazaki: şma) for 2. Pers. plur. Rectus
2. Person Plural Obliquus
English Meaning: you, your (plural)
Avesta yuşmâ-, Parthian: eşmâ
Persian: şoma
Kurdish: we, Zazaki: şima (read: şma), Talysch: şema
Balochi: şuma
So, we take for High Iranian Language: şma for 2. Pers. plur. Obliquus
3. Person Singular rectus
English Meaning: he, she, it
Avesta eve
Persian: un / u
Kurdish: ew / ewe, Zazaki: o /a / ew, Talysch: ev
Hawrami: aw
So, we take for High Iranian Language: eve (Talysch: ev + Kurdish: -e) for 2. Pers. plur. Rectus
3. Person Singular Obliquus
No Information about Old Iranic
3. Person Plural Rectus
No Information about Old Iranic
3. Person Plural Obliquus
No Information about Old Iranic
So we can abstract:
Rectus: ez, tu, ema, êşma, eve, ?
Obliquus: men, te, ma, şma, ?, ?
We have yet only one step to complete the Pronomes for !High Iranian Language!