e-------12-14-15-14-12-----------------------------------------------------e
b-12-15----------------15-12----------12-15-15-----------------------------b
g----------------------------12-14-12--------------------------------------g
d--------------------------------------------------------------------------d
a--------------------------------------------------------------------------a
e--------------------------------------------------------------------------e

e-------12-14-15-14-12----------------------12-----------------------------e
b-12-15----------------15-12----------12-15--------------------------------b
g----------------------------12-14-12--------------------------------------g
d--------------------------------------------------------------------------d
a--------------------------------------------------------------------------a
e--------------------------------------------------------------------------e