Extract SVG Path attributes

I am currently working on extracting path attributes from a particular svg file. I am able to extract the desired string that look like this:

M 398.7,106.8 c -5.5,-2.7 -20.7,-4.7 -36.1,-4.6 -15.4,0.1

or sometimes it look like the following

M398.7,106.8c-5.5-2.7-20.7-4.7-36.1-4.6s-22.1,2-22.1,2...

My goal is to extract all the letters and number in a n * 2 cell array with letters being placed by themselves in a row while numbers have to be paired together in a column. Please help.