Note: The information transfer rate may or may not be equal to the transmission modulation rate.
From Federal Standard 1037C in support of MIL-STD-188.
... or r + uu, depending on the region l^i = l + r^i (Sanskrit recognizes vocalic r (errr) and l (ulll), unlike, say, English) Diphthongs (Combinations of Simple Vowels) ...