Two Way example

First attempt
G	C	A	T	C	G	C	A	G	A	G	A	G	T	A	T	A	C	A	G	T	A	C	G
		1	2
G	C	A	G	A	G	A	G

Shift by: 2

Second attempt
G	C	A	T	C	G	C	A	G	A	G	A	G	T	A	T	A	C	A	G	T	A	C	G
				1
		G	C	A	G	A	G	A	G

Shift by: 1

Third attempt
G	C	A	T	C	G	C	A	G	A	G	A	G	T	A	T	A	C	A	G	T	A	C	G
					1
			G	C	A	G	A	G	A	G

Shift by: 1

Fourth attempt
G	C	A	T	C	G	C	A	G	A	G	A	G	T	A	T	A	C	A	G	T	A	C	G
						1
				G	C	A	G	A	G	A	G

Shift by: 1

Fifth attempt
G	C	A	T	C	G	C	A	G	A	G	A	G	T	A	T	A	C	A	G	T	A	C	G
					7	8	1	2	3	4	5	6
					G	C	A	G	A	G	A	G

Shift by: 7

Sixth attempt
G	C	A	T	C	G	C	A	G	A	G	A	G	T	A	T	A	C	A	G	T	A	C	G
														1	2
												G	C	A	G	A	G	A	G

Shift by: 2

Seventh attempt
G	C	A	T	C	G	C	A	G	A	G	A	G	T	A	T	A	C	A	G	T	A	C	G
																1	2
														G	C	A	G	A	G	A	G

Shift by: 2

Eighth attempt
G	C	A	T	C	G	C	A	G	A	G	A	G	T	A	T	A	C	A	G	T	A	C	G
																		1	2	3
																G	C	A	G	A	G	A	G

Shift by: 3

The Two Way algorithm performs 20 character comparisons on the example.