And a long vowel is also called guru 'heavy'.,
This is clear the anuvritti of the word conjunct is not understood in this sutra. As i of ईहांचक्रे he endeavoured, ईक्षांचक्रे he saw. Here the letter ई is guru, and because of its being called guru, the rule 3.1.36 is applied in forming the perfect tense by the addition of the augment आस्. Thus all long vowels, and short vowels followed by conjunct consonants are guru or heavy. All other short vowels are laghu.,