Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the infinitive stem that is associated with a subjunctive present of a and a plural preterite of uo?

### Inputs:
table_name: table, columns: ['Inf. Stem', 'Sing. Pres.', 'Plur. Pres.', 'Sing. Pret.', 'Plur. Pret.', 'Subj. Pres.', 'Subj. Pret.', 'Past Part.']

### Response:
SELECT Inf. Stem FROM table WHERE Subj. Pres. = a AND Plur. Pret. = uo