First player after blinds
UTG/EP1
Under the Gun / Early Position 1
Second player after blinds
UTG+1/EP2
Under the Gun +1 / Early Position 2
Third player after blinds
UTG+2/EP3
Under the Gun +2 / Early Position 3
Fourth player after blinds
MP1 / LJ
Middle Position 1 / Lojack
Fifth player after blinds
MP2 / HJ
Middle Position 2 / Hijack
Sixth player after blinds
CO
Cutoff
Last player before blinds
BTN
Button
Small Blind
SB - player who has to put in small blind
Big Blind
BB - player who has to put in big blind