Charango Chord Chart and Tabs in Ronroco alternative Bolivian Tuning

Bb7b5, BbM7b5, BbM7b5, BbM7b5, Bb dom7dim5
Notes: B♭, D, F♭, A♭
x,9,11,8,7 (x3421)
x,9,7,8,11 (x3124)
10,9,11,x,7 (324x1)
10,9,7,x,11 (321x4)