How do you write alphabet in bengali language?

The Bengali alphabet doesn't directly correspond to the Roman alphabet's A-Z sequence. It's a consonant-vowel system, where consonants are written as base characters and vowels are added as modifiers. There's also a distinct set of vowel letters.

Here's a representation showing the basic consonants (the order might vary slightly depending on the system used):

ক (kɔ) - ka

খ (khɔ) - kha

গ (ɡɔ) - ga

ঘ (ɡɦɔ) - gha

ঙ (ŋɔ) - ŋa

চ (tʃɔ) - cha

ছ (tʃʰɔ) - chha

জ (dʒɔ) - ja

ঝ (dʒʰɔ) - jha

ঞ (ɲɔ) - ña

ট (ʈɔ) - ṭa

ঠ (ʈʰɔ) - ṭha

ড (ɖɔ) - ḍa

ঢ (ɖʰɔ) - ḍha

ণ (ɳɔ) - ṇa

ত (tɔ) - ta

থ (thɔ) - tha

দ (dɔ) - da

ধ (dhɔ) - dha

ন (nɔ) - na

প (pɔ) - pa

ফ (phɔ) - pha

ব (bɔ) - ba

ভ (bhɔ) - bha

ম (mɔ) - ma

য (dʒɔ) - ya (often the same as জ but with a different vowel sound)

র (rɔ) - ra

ল (lɔ) - la

শ (ʃɔ) - śa

ষ (ʃɔ) - ṣa

স (sɔ) - sa

হ (hɔ) - ha

Vowels:

অ (ɔ) - a (short a)

আ (a) - ā (long a)

ই (i) - i (short i)

ঈ (iː) - ī (long i)

উ (u) - u (short u)

ঊ (uː) - ū (long u)

ঋ (r̥) - ṛ (a less common vowel)

এ (e) - e

ঐ (oi) - oi

ও (o) - o

ঔ (ou) - au

This isn't a complete representation; there are additional conjunct consonants (where two or more consonants are combined) and other nuances. Trying to force a direct A-Z comparison loses the essence of the Bengali script. It's better understood as a unique system with its own logic.

To see the letters correctly, you'll need a font that supports Bengali script.