(/ˈsʌɹəɡɨt ɛnd ˈpɔɪnt/ )

•

•

•

γ u

θu

γ’u’

θ’u’

α,β

u= 1, ..., 13 u’= 1, ..., 6

˄

˄

˄

˄

•

•

u= 1, ..., 7 u’’= 1, ..., 4

θu θ’’u’’ θ’’’

u’’’

u’’’= 1, 2

θ’u’

u’= 1, ..., 6

ξ u

γ u

ξ’’u’’

γ’’u’’ γ’’’

u’’’γ’u’

α, β

η, λ

˄

˄

˄

˄

˄ ˄

˄

˄

˄

˄

•

•

•