At first, I could only see the back of the head of the man on the left. I began the portrait of the woman adjacent to him as I saw her: obscuring the man. The third man, the one next to that woman, was looking straight at me, so I reverted to gathering visual information about him through furtive glances. His face was not the result of ‘blind drawing’. The final subject was a female, whose outline I did draw without looking at the page. One can tell this by her out-of-scale proportions and the fact that she looks like a bearded man instead of a woman.
I returned to the complete the first figure when his face was revealed.