The affix kan comes in the sense of 'versed therein or skilled therein' after the prātipadika (Nominal Stem) ākarṣa etc. being in the Locative -7th case in construction.,
Thus आकर्षे कुशलः = आकर्षकः, त्सरुकः. Another reading has आकष (Bohtlingk).
1 आकर्ष (आकष), 2, त्सरु, 3 पिशाच (पिपासा), 4 पिचण्ड, 5 अशनि, 6 अश्मन्, 7 निचय (विचय), 8 चय, 9 विजय, 10 जय, 11 आचय, 12 नय, 13 पाद (निपाद),14 दीप, 15 ह्रद, 16 ह्राद, 17 ह्लाद, 18 गद्गद, 19 शकुनि, 20 अव ॥,