Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Roy has 2 blue pens. He has twice as many black and 2 less than twice as many red than black pens. How many pens does Roy have in all?

### Response:
 Roy ana kalamu za nyeusi 2 x 2 = <<2*2=4>>4.
Mara mbili ya idadi ya kalamu za nyeusi ni 4 x 2 = <<4*2=8>>8.
Hivyo, kuna kalamu za nyekundu 8 - 2 = <<8-2=6>>6.
Hivyo, ana kalamu 2 + 6 + 4 = <<2+6+4=12>>12 jumla.