Set symmetric difference

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Problem

Read two sets of words, then write out their symmetric difference (the set of words that appears in just one of the two input sets). The output must be in alphabetical order.

Options

exec is denied

now post-mortem time, all source codes will be revealed

Sample input:_

ja sp gpp ds tgr v x a zgy
zgy ue tqx iog w ugq v sp ds tgr e

Sample output:

a e gpp iog ja tqx ue ugq w x

Sample input:_

m kgp w hqa o ozt r mbl t ex lx e b j c onj na fy x cg ic u ut vgt vk n v mfo a pdd ixf rk bg cb cog yb
bg yw lx h ws c nli ayw lr zl ixf onj q cg nae mp v mfo cog ozt f x a ta o pdd qn yb cb kgp s

Sample output:

ayw b e ex f fy h hqa ic j lr m mbl mp n na nae nli q qn r rk s t ta u ut vgt vk w ws yw zl

Sample input:_

r wxh v gma d jtm s my k yn avp mmo ti o ce ns kyv j nrh lu p wev vvc b qm grf e rqg dg px xn ecm qri ma ty a m xtz t git oka igg f quo iud aq fnt nq
p y yab i yjy e zg pe xn nrh avp vvc gac qri cwh nq oka yn mmo byd yi jtm ns f ug gyo unz pj coc xpi bm dg u aq quo t eev s h vz dw ot loc wt qcw fnt xin zb bpk k px wev lvc kyv grf nrt ij

Sample output:

a b bm bpk byd ce coc cwh d dw ecm eev gac git gma gyo h i igg ij iud j loc lu lvc m ma my nrt o ot pe pj qcw qm r rqg ti ty u ug unz v vz wt wxh xin xpi xtz y yab yi yjy zb zg

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