Caitanya-caritāmṛta 3.7
satya, tretā, dvāpara, kali, cāri-yuga jāni sei cāri-yuge divya eka-yuga māni
[satya, tretaa, dvaapara, kali, chaari-yuga jaani sei chaari-yuge divya eka-yuga maani]
Blended reading (Sanskrit + English inline)
satya, tretā, dvāpara, kali, cāri-yuga jāni sei cāri-yuge divya eka-yuga māni
We know that there are four ages [yugas], namely Satya, Tretā, Dvāpara and Kali. These four together constitute one divya-yuga.
My note
Source: vedabase.io