b-a along (3,3+s,10) order of vanishing at s=0: 6  degree: 25
c-b along (2,7,7+s) order of vanishing at s=0: 6  degree: 25
c-a along (5,9,5+s)? (c=a+s,b=9) order of vanishing at s=0: 6  degree: 25
a+1/2... a along (s-1,4,9) order of vanishing at s=0: 0  degree: 25
