You are talking about Ulta (reverse) Navkar Mantra – where each part is written from the last letter backwards.

Below is a simple pronunciation guide.

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1. Ulta Navkar Mantra (Devanagari)

लंगमं ईवह मंढप। सिंवेव्स च णंलागमं। णोसणापप्वपा वव्स। रोकाक्मोन चपं सोए। णंहूसावव्स एलो मोन। णंयाझाज्वउ मोन। णंयारियआ मोन। णंद्धासि मोन। णंताहंरिअ मोन।

You can also see it here

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2. Easy pronunciation (break in small parts)

Read slowly, like Hindi, one letter at a time:

1. laṅ-ga-mam ee-vah man-dhap

(लंगमं ईवह मंढप)

1. sim-veyvs cha nan-laa-ga-mam

(सिंवेव्स च णंलागमं)

1. no-sa-naa-pap-va-vaa va-vas

(णोसणापप्वपा वव्स)

1. ro-kaa-kmo-nah cha-pam so-eh

(रोकाक्मोन चपं सोए)

1. nam-hu-saa-va-vas e-lo mon

(णंहूसावव्स एलो मोन)

1. nam-yaa-jhaa-jvau mon

(णंयाझाज्वउ मोन)

1. nam-yaa-ri-yaa mon

(णंयारियआ मोन)

1. nam-ddhaa-si mon

(णंद्धासि मोन)

1. nam-taa-ham-ri-a mon

(णंताहंरिअ मोन)

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3. How to practice

1. First, learn to read normal Navkar Mantra clearly (Namo Arihantanam…).
2. Then, for Ulta Navkar:

- Read one word at a time, very slowly. - Say each syllable clearly (like learning a new tongue‑twister). - Practice daily for a few minutes instead of very long fast chanting.

If you want, I can next write it in Roman script only line‑by‑line (without Devanagari), so you can read it even if you don’t know Hindi script.