parameter[geometry] = open
beginning[p0c] = 1e3
beginning[beta_a] = 1
beginning[beta_b] = 1

sb:   sbend, l = 1, type = "a b"
sb1:  sbend, l = 1, type = "c::>>d"
sb2:  sbend, l = 1
sb99: sbend, l = 1

qu:   quad, l = 1, alias = "q>> :T"
qu1:  quad, l = 1, alias = "HHHH"
qu2:  quad, l = 1
qu99: quad, l = 1

dr:   drift, l = 1, descrip = "So Long"
dr1:  drift, l = 1, descrip = "SSSS"
dr2:  drift, l = 1
dr99: drift, l = 1

oct:   octupole, l = 1
oct1:  octupole, l = 1
oct2:  octupole, l = 1
oct99: octupole, l = 1

m1: marker, superimpose, ref = qu1
m2: marker, superimpose, ref = qu2


ll1: line = (sb, qu, dr, sb1, qu1, oct1, dr1, sb2, qu2, dr2, sb99, qu99, dr99, sb, qu, dr)

ll2: line = (oct, sb, qu, dr, sb1, qu1, dr1, dr2, sb2, qu2, sb99, qu99, dr99, sb, qu, dr, oct1, oct2, oct99)
ll2[geometry] = open
ll2[p0c] = 1e3
ll2[beta_a] = 1
ll2[beta_b] = 1

use, ll1, ll2, ll2

expand_lattice

start_branch_at 2>>qu1