synthesizer1.waitEngineState(Synthesizer.QUEUE_EMPTY);
synthesizer1.speakPlainText("1 2 3 4 5 6 7 8 9 11 12", null);
synthesizer2.speakPlainText("1 2 3 4 5 6 7 8 9", null);
synthesizer1.waitEngineState(Synthesizer.QUEUE_EMPTY);
synthesizer2.waitEngineState(Synthesizer.QUEUE_EMPTY);
synthesizer1.speakPlainText( "That is a bit confusing.", null);
synthesizer1.speakPlainText( "Well, thanks. This was fun.", null);
synthesizer1.speakPlainText("Goodbye everyone.", null);
synthesizer1.waitEngineState(Synthesizer.QUEUE_EMPTY);