Part,  -

 1   1 1 |       8/37} savarṇadīrghatve ṛti , rṛvāvacanam ḷti , lḷvāvacanam
 2   1 1 |    yat etat savarṇadīrghatve ṛti iti etat ṛtaḥ iti vakṣyāmi .~(
 3   1 1 |      37} yathā iha bhavati : ṛti akaḥ: khaṭva ṛśyaḥ , māla
 4   1 4 |        448 {15/55} upasargāt ṛti dhātau iti .~(1.4.60.2)
 5   6 1 |     420 {16/49} <V>ākāraḥ na ṛti dhātau saḥ</V> .~(6.1.87.
 6   6 1 |     3 R IV.418 - 420 {19/49} ṛti dhātau ākāraḥ ucyate .~(
 7   6 1 |     R IV.420 {5/8} ākāraḥ na ṛti dhātau saḥ .~(6.1.87.3)
 8   6 1 |        424 {10/16} upasargāt ṛti dhātau vṛddhiḥ eva yathā
 9   6 1 |    14 R IV.423 - 424 {14/16} ṛti akaḥ iti .~(6.1.91.1) P
10   6 1 |    14 R IV.423 - 424 {15/16} ṛti hrasvāt upasargāt vṛddhiḥ
11   6 1 |     1/6} <V>savarṇadīrghatve ṛti ṛvāvacanam</V> .~(6.1.101)
12   6 1 |   437 {2/6} savarṇadīrghatve ṛti ṛ vā bhavati iti vaktavyam .~(
13   6 1 |      90.5 - 9 R IV.469 {2/6} ṛti akaḥ savarṇārtham</V> .~(
14   6 1 |      10 - 16 R IV.469 {1/13} ṛti hrasvāt upasargāt vṛddhiḥ
15   6 1 | vṛddhiḥ vipratiṣedhena </V>. ṛti hrasvaḥ bhavati iti etasmāt
16   6 1 |      10 - 16 R IV.469 {2/13} ṛti hrasvaḥ bhavati iti etasya
17   6 1 |     IV.469 {12/13} upasargāt ṛti dhātau vṛddhiḥ eva yathā
18   6 4 |       39/66} tataḥ upasargāt ṛti vṛddhiḥ bhavati .~(6.4.74)