1
2
3
4
5
10

dog

dog

10

jog

jog

10

box

box

10

fox

fox

10

log

log

20

mom

mom

20

job

job

20

cop

cop

20

fog

fog

20

hop

hop

30

mop

mop

30

cob

cob

30

Ron

Ron

30

pop

pop

30

hot

hot

40

rob

rob

40

dot

dot

40

top

top

40

pot

pot

40

not

not

50

bog

bog

50

sob

sob

50

con

con

50

pom

pom

50

mob

mob