Reference for Yevamot 9:1
יֵשׁ מֻתָּרוֹת לְבַעֲלֵיהֶן וַאֲסוּרוֹת לִיְבָמֵיהֶן, מֻתָּרוֹת לִיְבָמֵיהֶן וַאֲסוּרוֹת לְבַעֲלֵיהֶן, מֻתָּרוֹת לָאֵלּוּ וְלָאֵלּוּ, וַאֲסוּרוֹת לָאֵלּוּ וְלָאֵלּוּ. וְאֵלוּ מֻתָּרוֹת לְבַעֲלֵיהֶן וַאֲסוּרוֹת לִיְבָמֵיהֶן, כֹּהֵן הֶדְיוֹט שֶׁנָּשָׂא אֶת הָאַלְמָנָה וְיֶשׁ לוֹ אָח כֹּהֵן גָּדוֹל, חָלָל שֶׁנָּשָׂא כְשֵׁרָה וְיֶשׁ לוֹ אָח כָּשֵׁר, יִשְׂרָאֵל שֶׁנָּשָׂא בַת יִשְׂרָאֵל וְיֶשׁ לוֹ אָח מַמְזֵר, מַמְזֵר שֶׁנָּשָׂא מַמְזֶרֶת וְיֶשׁ לוֹ אָח יִשְׂרָאֵל, מֻתָּרוֹת לְבַעֲלֵיהֶן וַאֲסוּרוֹת לִיְבָמֵיהֶן:
There are some who are permitted to their husbands and forbidden to their yavmin, and there are some who are permitted to their yavmin and forbidden to their husbands. And there are some who are permitted to both, and there are some who are forbidden to both. These are permitted to their husbands and forbidden to the yavmin: a regular Cohein who married a widow and who has a brother who is a high-priest [The same applies to (a Cohein who married) a virgin, for when he dies she is rendered a widow. "a widow" is stated in anticipation of what comes later, viz.: "a high-priest who married a widow."], a chalal who married a kesheirah, who has a brother who is kasher, an Israelite who married the daughter of an Israelite, who has a brother who is a mamzer, a mamzer who married a mamzereth, who has a brother who is an Israelite. These are permitted to their husbands and forbidden to their yavmin.