r
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v
a
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10

a

a

10

y

y

10

f

f

10

z

z

10

l

l

20

qh

qh

20

tm

tm

20

ay

ay

20

wj

wj

20

dg

dg

30

zxc

zxc

30

rjy

rjy

30

set

set

30

rnl

rnl

30

stb

stb

40

awet

awet

40

tbky

tbky

40

eart

eart

40

kyne

kyne

40

brsy

brsy

50

qgidf

qgidf

50

srjdrn

srjrn

50

eiura

eiura

50

rtuhu

rtuhu

50

brjyt

brjyt