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

### Instruction:
Pat’s computer password is made up of several kinds of alphanumeric and symbol characters for security. He uses a string of eight random lowercase letters, a string half that length of alternating upper case letters and numbers, and one symbol on each end of the password. How many characters in all is Pat‘s computer password?

### Response:
 Safu ya pili ya herufi ni nusu ya urefu wa safu ya kwanza, hivyo ina urefu wa 8 / 2 = <<8/2=4>>4 herufi.
Nenosiri lina alama moja mwishoni mwa kila upande, hivyo lina alama 1 * 2 = <<1*2=2>>2.
Jumla ya herufi za nenosiri la kompyuta ya Pat ni 8 + 4 + 2 = <<8+4+2=14>>14.