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The female can be -ovna or -evna
if father's name ends in consonant (Anton, Alexandr, Oleg), it will be -ovna. (Antonovna, Olegovna)
if the name ends in -y (Alexey, Andrey and so on), it will be -evna (Alexeyevna)
And the male patronimic can be -ovich or -evich, the same rules (Antonovich, Alexeyevich)
there are some exceptions anyway