e---0-----1------3-------0------1-------------0-------------------------------------
b--------------------------------------3------------1-----3-------------------------
g-------------------------------------------------------------------------------- X2
d---------------------------------------------------------------------------------
a-----------------------------------------------------------------------------------
e-----------------------------------------------------------------------------------

e---------------------0----------0---------------------------------0----------------
b---1-----1----3---------1------------3-----1----1------3--------------1-----0------
g-----------------------------------------------------------------------------------
d-----------------------------------------------------------------------------------
a-----------------------------------------------------------------------------------
e-----------------------------------------------------------------------------------

e-------------------------0------1----0--------------------------------------------
b----1-----1-------3----------------------3------1-------0------------0----1---1---
g--------------------------------------------------------------2---0---------------
d----------------------------------------------------------------------------------
a----------------------------------------------------------------------------------
e----------------------------------------------------------------------------------