The way I laid it out above IS 52. I added wrong.
I think that last k1 on row one is a mistake.
If you do it without that k1, then the row starts with 3 and ends with 3.
If you look at the next row, row 3, it starts with 3 and ends with 3.
I'd give it a try without that extra k1 in the first row.
Sorry for any confusion.