Kalachakra Mantra

From Rigpa Wiki

Root Mantra of Kālachakra transliterated in Tibetan using Sogyal Rinpoche's calligraphy

haṃ kṣaḥ ma la wa ra ya [pronounced: ham ksha ma la wa ra ya]

The ten letters of the root mantra of Kālachakra are:

1. h
2. kṣ
3. m
4. l
5. w
6. r
7. y
8. the visārga in kṣaḥ, which features as the cresent below the anusvāra
9. the anusvāra in haṃ
10. the vowel a, which is the "life" of the consonants.