android letter - words game

i want a new app like in the picture i ve attach. player got 4,5,or 6 letters to find one word. in activity1 player should choose who many letters wants to play with. player press one letter from the random 4,5,6 letters (bottom) and the letter should dissapear and moved to the firs line (where the word should formated, at the top) timer is 360sec . also one button for skip to the next word by remove 10 sec from the time. if they find the correct word player wins 10 sec. app should support android 4.4 to 7.0. should br created with native android code with android studio with google leaderboards and google ads. banner in every activity at the bottom of the page and a big one and the end of the game.. in assets folder should have 3 files that contain the words. score should be 1 point for 1 correct word. at the end of the game the word that player didnt find should be reveal. more info... see picture and send me a message. 3 activities one for 4, one for5, and one for the 6 words quiz