# [APL (Dyalog Unicode)], <s>22 17</s> 10 bytes

Saved 7 bytes thanks to ovs!

<!-- language-all: lang-apl -->

    ∊{⊂⍺+⍳≢⍵}⌸

[Try it online!][TIO-kxwfnbma]

[APL (Dyalog Unicode)]: https://www.dyalog.com/
[TIO-kxwfnbma]: https://tio.run/##SyzI0U2pTMzJT///qG@qp/@jtgkGXFyPeucqBOTnVKZl5uQopOUXKZTmZRaWpirkJhZnc4UC1VRXG9pq6z/q3Wp7aL3ho7aJQFbtoRU6MSD6fxpQwaOOrupHXU2PendpP@rd/KhzEUjmUc@O///TFAwVjBSMuUA0iAVkg3kGMAiVMTSAIBQMlDu03hQNmyjAoKWCJUw3xGwA "APL (Dyalog Unicode) – Try It Online"