How do i get back to this ability build

[Municiple]

At level 16 as a 1 monk, 1 cleric, 14 fighter build i had these stats

20 str
15 dex
13 con
8 int
17 wis
8 cha

What would i need to spend (and when) as a 32 point build in the begining to reach these numbers again when i lesser reincarnate, i just reincarnated and managed to mess up and was off by 2 points

Im now a 2 monk and 14 fighter and these are my base ability points after reincarnating back to 16

19 str
15 dex
13 con
8 int
16 wis
8 cha

i cant figure out what i did wrong and how to get back to what i had before, does it have something to do that i didnt take a level of cleric this time around?
(my class is elf by the way)