(archaic) In the traditional orthography, a dead consonant r before a consonant sometimes takes an above-base form, known as a dot reph, which looks like a short vertical line or a dot. Generally, a chillu-r (ർ) is used instead of a dot reph in the reformed orthography. In writing it was sometimes confused with the vertical bar virama ഻ but they are used for different purposes.
r ര് + ga ഗ = ൎഗ (Reformed: ർഗ)
r ര് + ja ജ = ൎജ (Reformed: ർജ)