G maj13 = G · A · B · D · E · F♯ (root, 9th, 3rd, 5th, 6th/13th, 7th). 714 playable voicings on the standard E9 copedent — the best 12 by neck position below.
Low neck (frets 0–7)
Fret 3 · AA raises strings 5 & 10 a whole step (B→C♯)Fret 3 · CC raises string 4 a whole step (E→F♯); raises string 5 a whole step (B→C♯)Fret 5 · B + RKLB raises strings 3 & 6 a half step (G♯→A)RKL lowers string 2 a half step (D♯→D); lowers string 9 a half step (D→C♯)Fret 5 · B + CB raises strings 3 & 6 a half step (G♯→A)C raises string 4 a whole step (E→F♯); raises string 5 a whole step (B→C♯)
Mid neck (frets 5–12)
Fret 5 · RKLRKL lowers string 2 a half step (D♯→D); lowers string 9 a half step (D→C♯)Fret 5 · CC raises string 4 a whole step (E→F♯); raises string 5 a whole step (B→C♯)Fret 5 · C + RKLC raises string 4 a whole step (E→F♯); raises string 5 a whole step (B→C♯)RKL lowers string 2 a half step (D♯→D); lowers string 9 a half step (D→C♯)Fret 8 · RKRRKR lowers string 4 a half step (E→D♯); lowers string 5 a half step (B→A♯)
High neck (frets 10–17)
Fret 15 · AA raises strings 5 & 10 a whole step (B→C♯)Fret 15 · CC raises string 4 a whole step (E→F♯); raises string 5 a whole step (B→C♯)Fret 17 · B + RKLB raises strings 3 & 6 a half step (G♯→A)RKL lowers string 2 a half step (D♯→D); lowers string 9 a half step (D→C♯)Fret 17 · B + CB raises strings 3 & 6 a half step (G♯→A)C raises string 4 a whole step (E→F♯); raises string 5 a whole step (B→C♯)