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Etta from Rosendale Primary School wrote to tell us that you must click once for the first picture, twice for the second picture (the one on the right-hand side), three times for the third man and four times for the last picture at the bottom.
Alice from Perse Girls' Senior School went on to explain:... you can continue turning it so if the first position took $1$ turn then you turn him another $4$ turns so he's in the same position.
Thank you to both of you.