Develop a musical arrangement based on the stated alphabetical form and the given motif.
X:1
L:1/8
M:2/2
K:G
['ga bgdB GBdg fecA E2 FE DdcA', 'AG FGAB cDEF GABc d2', 'bgdB GBdg fecA E2 (3gfe dcAF DFAF', 'AG FGAB cAFA GABc d2 BG FGAB']  
X:1
L:1/8
M:2/2
K:G
 ga | bgdB GBdg | fecA E2 FE | DdcA FDEF | GABc d2 ga | bgdB GBdg | fecA E2 FE | DdcA FDEF | 
 G2 B2 G2 :: AG | FGAB cDEF | GABc d2 AG | FGAB cDEF | GABc d2 ga | bgdB GBdg | fecA E2 FE | 
 DdcA FDEF | G2 B2 G2 ::"^variations" ga | bgdB GBdg | fecA E2 (3gfe | dcAF DFAF | GABc dfga | 
 bgdB GBdg | fecA E2 (3gfe | dcAF DFAF | G2 (3FGA G2 :: AG | FGAB cAFA | GABc d2 BG | FGAB cBcA | 
 GABc dfga | bgdB GBdg | fecA E2 (3gfe | dcAF DFAF | G2 (3FGA G2 :|  