i agree that is a good method...but do not use just that analise — try to understand pascal s triangle with this| Such a "diagonal" has a sum that is a Fibonacci number. In the case of the example, the Fibonacci number is 13: 1 1 1 1 2 1 1 → 3 ...
well,it is not realy head and shoulders(figure). frist top has same number of pips from buttom to maximum as the third,and the midlle top is as it should to be in head and shoulders figure. but,my opinion is that it should be realise as real head ...