021：
05 06 11 15 17 18 20 23 24 32=1-4
01 03 08 09 12 14 16 27 28 28 =012防0123
:ls21 :ls19 :ls19
------------------------------------------------------------------------
020:01 03 06 10 15 20 22 23 24 33=1-4出03 33 √
02 04 05 07 11 12 16 17 18 21 25 29 30=012防0123出12 17 √