After Kali Yuga is over, Treta Yuga comes again; and thus it is said that all the Yugas comprise a cycle of twelve thousand years.
क्षीणे कलियुगे चैव प्रवर्तेत कृतं युगम्। एषा द्वादशसाही युगाख्या परिकीर्तिता॥