xIntro: E--------------------------|--13b15--11^(1/4)-------------13b15--13b15--13-------------| B--11-------11-------11-13-|-------------------13-11-13--------------------13-11----13-| G-----12-12----12-12-------|-----------------------------------------------------12----| D--------------------------|-----------------------------------------------------------| A--------------------------|-----------------------------------------------------------| E--------------------------|-----------------------------------------------------------| P-O E--------11^(1/4)------------------------11-13-13b15--13b15---11-----13b15--13b15--13---| B-----11----------13--13-11----13-----13-------------------------13---------------------| G--12-----------------------12----------------------------------------------------------| D---------------------------------------------------------------------------------------| A---------------------------------------------------------------------------------------| E---------------------------------------------------------------------------------------| P-O P-O P-O E----------------------11^(1/4)---------------------13b15--13b15b13-11--13b15-13b15---| B--13-13-11----13----11---------13--13-11----13---------------------------------------| G-----------12-----12---------------------12------------------------------------------| D-------------------------------------------------------------------------------------| A-------------------------------------------------------------------------------------| E-------------------------------------------------------------------------------------| P-O E--13b15--11^(1/4)---------------------------------------| B------------------13-11----13---11-------11-------11-13-| G------------------------12---------12-12----12-12-------| D--------------------------------------------------------| A--------------------------------------------------------| E--------------------------------------------------------|