twenty shoulders —

four divine shoulders (which branched out to embrace her, to sustain himself during separation) —

 and four divine shoulders; —

being the one with four shoulders —

 and big divine shoulders, —

 divine shoulders —

 thousand shoulders —

from the 1000 shoulders —

divine shoulders —

divine shoulders (which give shade as said in -bāhuchchāyām avashtabdha:-) —

shoulders —