I added the following three characters to PT Serif (Regular, Italic, Bold, BoldItalic) and PT Sans-Regular (Regular, Italic, Bold, BoldItalic, Narrow, NarrowBold):COMBINING MACRON, COMBINING MACRON BELOW, COMBINING DOT BELOW. I made binding of these diacritical symbols to each Cyrillic sign for correct display relative to the central axis of the sign.

IPHSerif-Regular.ttf

IPHSerif-Italic.ttf

IPHSerif-BoldItalic.ttf

IPHSerif-Bold.ttf

IPHSans-Regular.ttf

IPHSans-NarrowBold.ttf

IPHSans-Narrow.ttf

IPHSans-Italic.ttf

IPHSans-BoldItalic.ttf

IPHSans-Bold.ttf