Table 2.

All possible strings generated from the (Q)AXB(R) grammar.

Strings with X1	Strings with X2	Strings with X3	Strings with X4
A1 X1 B1 *	A1 X2 B1	A1 X3 B1 * #	A1 X4 B1 * #
A1 X1 B2	A1 X2 B2 *	A1 X3 B2 * #	A1 X4 B2
A1 X1 B3 * #	A1 X2 B3 *	A1 X3 B3	A1 X4 B3
A2 X1 B1	A2 X2 B1 * #	A2 X3 B1 *	A2 X4 B1
A2 X1 B2 * #	A2 X2 B2 *	A2 X3 B2	A2 X4 B2
A2 X1 B3 * #	A2 X2 B3	A2 X3 B3 *	A2 X4 B3
A3 X1 B1 *	A3 X2 B1 * #	A3 X3 B1	A3 X4 B1
A3 X1 B2 *	A3 X2 B2	A3 X3 B2 * #	A3 X4 B2
A3 X1 B3	A3 X2 B3 * #	A3 X3 B3 *	A3 X4 B3

Strings that were presented in the input for Experiment 1 are denoted with *; strings presented in the input for Experiment 2 are denoted with #.