N.1 composed of three balls : from left size 3 cm center 3.5 cm right 3.2 cm long 49 cm,
N.2 composed of three balls: from left size 2.8 cm center 3.5 cm right 2.6 cm long 47 cm,
N.3 composed of three balls : from left size 2.5 cm center 4 cmnright 2.5 cm long 52 cm,