The Compendium of Caraka 1.19.8

1.19.8

tatra ślokau
viṃśakāścaikakāścaiva trikāścoktāstrayastrayaḥ /
dvikāścāṣṭau catuṣkāśca daśa dvādaśa pañcakāḥ //

Here are two verses: / Three sets of twenty, three sets of single [disorders], and three sets of three have been spoken of, / and eight sets of two, ten sets of four, and twelve sets of five;