▷
□
▣
■
□▷
□□
□▣
□■
▣▷
▣□
▣▣
▣■
■▷
■□
■▣
■■
□▷▷
□▷□
□▷▣
□▷■
□□▷
□□▣
□□□
□□■
(I believe there is an equally valid solution exchanging the meaning of the digits ▣ and ■.)
▷
□
▣
■
□▷
□□
□▣
□■
▣▷
▣□
▣▣
▣■
■▷
■□
■▣
■■
□▷▷
□▷□
□▷▣
□▷■
□□▷
□□▣
□□□
□□■
(I believe there is an equally valid solution exchanging the meaning of the digits ▣ and ■.)