-- 100times --

### 㑱m[h 0
real    1m4.832s
64.832sec

### 㑱m[h 5
real    2m10.516s
130.516sec

### 㑱m[h 15
real    3m51.117s
231.117sec

### 㑱m[h 50
real    9m58.381s
598.381sec

### 㑱m[h 75
real    17m42.983s
1062.983sec

### 㑱m[h 100
real    33m14.243s
1994.243

ɂm[h
   edge
   ^ _
  from to

ڑ(appendchild,insertbefore)l.