Diphthongs of R Sound Shifts

The r-coloration in diphthongs of R in a Congolese (Lingala) accent can shift to 🔑 [Ə]/[u͟h], [ɚ]/[er], [ɹ̙]/[R], [ɰ]/[R^w], [Ɣ]/[R^GHH].