Each mode's symmetry is denoted as ^{d}I, it has a degeneracy d, and transforms as an irrep I of the Skyrmion's symmetry group. We use the notation of Cotton. Character tables may be found here.
The zero modes are translations, rotations and isorotations. These decompose as ^{3}T_{1}, ^{3}T_{2} and ^{3}T_{2} respectively.
Freq.  Symmetry  Description/Notes  Visualization 

0.43  ^{3}T_{2}  A vertex of the tetrahedron moves away from its opposing face. Asymptotically, these become separate B=1 and B=2 clusters. 

0.56  ^{2}E  Two opposite edges of the tetrahedron pull away from each other, deforming it into a pretzellike shape. This space contains the wellknown twistedline scattering. 

0.91  ^{3}T_{2}  One vertex grows while the other three shrink. 

0.94  ^{1}A_{1}  The breathing mode. 

1.01  ^{2}E  Two vertices isorotate out of phase with the other two. 

1.59  ^{1}A_{2}  Each vertex isorotates about the color on its tip. 
Notes
Hover over an image (or if you're on a tablet/phone: tap on an image) to make it come to life. The hoverover text tells you the Cartesian realization of the element of the irrep you are looking at.