sa - Sa of lower octave (Mandra Saptak)
re - Ra of lower octave (Mandra Saptak)
Sa - Sa of middle octave (Madhya Saptak)
Re - Re of middle octave (Madhya Saptak)
SA - Sa of upper octave (Taar Saptak)
RE - Re of upper octave (Taar Saptak)
Re’ - Re komal
Ma’ - Ma Teevra
Dha’ - Dha Komal
Ni’ - Ni Komal
Other notes have similar meanings.