RFC1321 - MD5 algorithm document

Attempting to implement the MD5 algorithm.

I understand this:
Let [abcd k s i] denote the operation:
a = b + ((a + F(b,c,d) + X[k] + T[i]) <<< s)
...
Let [abcd k s i] denote the operation
a = b + ((a + G(b,c,d) + X[k] + T[i]) <<< s)

But I do not understand this:
Let [abcd k s t] denote the operation
a = b + ((a + H(b,c,d) + X[k] + T[i]) <<< s)
...
Let [abcd k s t] denote the operation
a = b + ((a + I(b,c,d) + X[k] + T[i]) <<< s)

Where the hell did "i" go and what is "t"??? Have I acquired an old RFC document?

>>6
Poopdicknuts-san, you're as persistent in shitting up the board as ever. You should register yourself a formspring account, and when people ask you in earnest a question, you can promptly tell them to shove it up their ass and refer to them as a ``cocksucking dickless nigger faggot'' or however it is that you do when you address other people, all with unmatched order and efficiency.