#21 is a bit complicated and filled with a lot of details , especially hidden ones
it forms a star shape abstract , letter " T's " as well
but you can see it forming a full human figure abstract of a woman too, with the head with hair in the middle and two hands and two feats on the ground
also the inside of each " T " shape can be seen as two heads, one big for the parent holding a smaller child " the other head , therefore resemble to the family part as well