Stimuli for Experiment 1.

Sequences all took the form ‘AXB’ (e.g., ‘bek kiv jat’), in which the ‘A’ and ‘B’ elements always co-occurred. There were 3 ‘A’ and ‘B’ elements and 24 possible ‘X’ elements giving a total of 72 possible grammatical sequences. Each sequence was presented once in each Learning Block and in the Recovery Block (see Methods). In the Testing Block, ungrammatical pairs of A and B elements (i.e., A1_B2, A1_B3, A2_B1, A2_B3, A3_B1, A3_B2) were presented four times and each ‘X’ element was presented once.