囟 囟 xin4
fontanel (gap between the bones of an infant's skull)

strokes 6
radical
囗
囗
strokes after radical 3
囟门 囟門 xin4 men2
fontanel (gap between the bones of an infant's skull)

囟脑门 囟腦門 xin4 nao3 men2
fontanel (gap between the bones of an infant's skull)