Shift + a to toggle among |ạ|à|á|ā|ạ̀|ạ́|
Shift + e to toggle among |ẹ|è|é|ē|ẹ̀|ẹ́|
Shift + i to toggle among |ị|ì|í|
Shift + o to toggle among |ọ|ò|ó|ō|ọ̀|ọ́|
Shift + u to toggle among |ụ|ù|ú|ū|ụ̀|ụ́|
Shift + n to toggle between |n̄|
Use 'Collapse Keyboard' to create space when using PC Keyboard