The grick makes one attack with its tentacles. If that attack hits, the grick can make one beak attack against the same target.
1
melee
If tentacles attack hits
Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 9 (2d6 + 2) slashing damage.
4
Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) piercing damage.