Suggested layouts . . . Just play !

( Not sure if images will show . . .

If not, here they are written out . . .

Layout 01 - A, B, C, D, C, B, A

D, C, A, B, A, C, D

A, B, C, D, C, B, A

D, C, A, B, A, C, D

A, B, C, D, C, B, A

D, C, A, B, A, C, D

A, B, C, D, C, B, A

D, C, A, B, A, C, D

A, B, C, D, C, B, A

Layout 02 - C, D, B, A, B, D, C

D, B, A, D, A, B, D

B, A, D, C, D, A, B

A, D, C, B, C, D, A

D, C, B, A, B, C, D

A, D, C, B, C, D, A

B, A, D, C, D, A, B

D, B, A, D, A, B, D

C, D, B, A, B, D, C

Layout 03 - D, B, C, B, C, B, D

A, D, B, C, B, D, A

D, A, D, B, D, A, D

C, D, A, D, A, D, C

B, C, D, A, D, C, B

C, D, A, D, A, D, C

D, A, D, B, D, A, D

A, D, B, C, B, D, A

D, B, C, B, C, B, D

Layout 04 - A, B, C, D, C, B, A

B, A, B, C, B, A, B

D, B, A, B, A, B, D

C, D, B, A, B, D, C

A, C, D, B, D, C, A

C, D, B, A, B, D, C

D, B, A, B, A, B, D

B, A, B, C, B, A, B

A, B, C, D, C, B, A