Þİ
Characters: Þ, İ
Þ
İ
Push the first n items of a, then the rest of a
lst-int
a[:b], a[b:]
int-lst
b[:a], b[a:]
⟨1|2|3|4|5|6|7|8|9⟩ 4 Þİ
⟨5|6|7|8|9⟩