check 10	20	0
check 20	20	0
check 30	40	0
check 40	20	0
check 50	30	0
check 60	30	0
check 70	20	0
check 80	10	0
check 90	30	0
check 100	20	0
U1 (knot) = 0   0   0   0   0.4507   1   1   1   1   

P1 (ctrlPnts)= 10 20 0 1    26.9805 38.8972 0 1    43.8981 23.0417 0 1    90.7259 17.8004 0 1    100 20 0 1    

D1 (degree) = 3
U1 (knot) = 0   0   0   0   0.154614   0.320209   0.478672   0.622831   1   1   1   1   

P1 (ctrlPnts)= 10 20 0 1    19.6913 -2.23388 0 1    27.7472 84.7832 0 1    33.3199 -8.73924 0 1    48.5295 48.4618 0 1    81.1572 -9.53066 0 1    85.0673 40.0963 0 1    100 20 0 1    

D1 (degree) = 3