#Move over machine:  Inserts blank after the first character
0	a	1	a	R
0	b	1	b	R
1	a	2	B	B
1	b	3	B	R
1	B	-3	B	R
2	a	2	a	R
2	b	3	a	R
2	B	4	a	L
3	a	2	b	R
3	b	3	b	R
3	B	4	b	L
#before end, go back to blank and then forward
4	a	4	a	L
4	b	4	b	L
4	B	-3	B	R