Partial reduplication occurs only with bases(root words) which begin with a consonant. It involves placing before the base a syllable consisting of the first consonant of the base followed by ‘e’.
This type of reduplication is no longer productive in the language; it occurs with a few bases, mainly nouns, and can not be applied to others. The reduplicated word has a meaning which is the same as that of the single form or related to. Sometimes, as in the first example below, the historical relationship is not obvious:
Indonesian Reference Grammar By Dr. James N. Sneddon