Sāṃkhya Kārikā verse 30

yugapat-catuṣṭayasya tu vṛttiḥ kramaśaś-ca tasya nirdiṣṭā |
dṛṣṭe tathā-api-adṛṣṭe trayasya tat-pūrvikā vṛttiḥ ||

yugapad - together, at the same time, simultaneouslycatuṣṭaya - a set of 4, quaterniontu - moreover; butvṛtti - fluctuation; modification; turning; set in motion, course of action, behaviour, movement; activity, function; professionkrama - sequence; order; series; regular arrangement; succession; progressing step by step; in regular course; gradually, by degreesca - andtasya - itsnirdiṣṭa - pointed out, shown, indicated, declared, announced, foretold, enjoined; ordered, meant or determined for, appointed todṛṣṭa - seentathā - so, like, after that manner.api - even, also, although; very; something more; moreoveradṛṣta - unseentraya - the threetat - that, thispūrva - eastward, to the east of; in front, before; former, prior, preceding, previous to, earlier than