Triplets!

21 - S on a D spots on a dice
21 - K of the D key of the door
21 - S on T L spots on three ladybirds
21- T x S three times seven
21 - A S A (this is a stinker) Aleles Second Album
Lots of these about in our garden today
Hope you have a safe weekend
Okay
21-TxS is three times seven