Aim: To convert a graph to a numbered "List".
R = Red, G = Green, O = Olive
ROW 1 (left to right): 1R, 1G, 2O.
ROW 2 (right to left): 1O, 1R, 1O, 1R.
ROW 3 (left to right) : 2R, 2O etc.
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Difficult Graph

R = Red, G = Grey, P = Pink
Rows 1 & 2 are worked as 1 Row. i.e.,( looking at the bottom row of the graph) :-
ROWS 1&2: 1R, 3G, 1P, 3G, 1R
ROW 3 (left to right) : 1R, 3G, 1R
ROW 4 (right to left) : 1R, 3G, 1R, etc.
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