Wt
HLt - OY
Lt - O
LLt - RO
M - R
HD - VR
D - V
LD - BV
Blk
In this sequence the colors are taken at the interval of the second.
That is what is meant by the abbreviation 2ds.
Taking the lowest color of the sequence as its keynote, as before, we
have for the Left Mode twelve distinct sequences, of which that which
follows is an example.