svābhāvike krame caiṣāṃ sara ityevasambhavet / natu syād rasa ityādiḥ sthitakramavirodhataḥ //
If the sequence of these [letters] were inherent [in them], then only [the form] "sara" would be possible, [but] never [the form] "rasa" etc., due to contradiction with the established sequence.