This is a way of finger-picking the song, using the chords provided by others.Capo 1st,
everything shown is relative of course.
[ Tab from: http://www.guitaretab.com/j/johnny-cash/327734.html ]
VERSE
e|--------Am--------------|
B|-------1-----1----------|
G|----------2-------------|
D|-------2---2------------|
A|---0--------------------|
E|------------------------|
CHORUS
e|-----C---------Dm----------Em-------Am--------------|
B|----1---------3----------0--------1-----------------|
G|------0---------2----------0---------2--------------|
D|--------2----0----0----------2----2----2------------|
A|----3--------------------2--------------------------|
E|----------------------------------------------------|
e|----------------------------------------------------|
B|----1---------3----------0--------1-----------------|
G|------0---------2----------0------------------------|
D|--------2----0----0----------2----2-----------------|
A|----3--------------------2--------------------------|
E|----------------------------------------------------|