The affix ṭhak comes, in the sense of coloured thereby after the words 1. lākṣā 2. rocanā 3. śakala 4. kardamā (which being names of colours, are in the Instrumental -3rd case in a sentence).,
This debars अण्. Thus लाक्षाया रक्तं वस्त्रं = लाक्षिकम्, so also रौचनिकम्, शाकलिकम् and कार्दमिकम् ॥
According to the opinion of Patanjali, the affix अण् also comes after शकल and कर्दमः । Thus शाकलम् and कार्दमम् ॥ According to Mahabhashya the words शकल and कर्दम do not occur in the sutra, but are given in the Vartika.
Vart:- The affix अन् comes after नीलीः as नील्या रक्तं = नीलं वस्त्रं ॥
Vart:- The affix कन् (1. 3. 8) comes after पीत, as पीतेन रक्तं = पीतकम् ॥
Vart:- The affix अञ् comes after हरिद्रा and महाराजन, as हारिद्रम् and माहाराजनम् ॥,