we 2dimensional coordinate like 1 3 2 05 then remove commas decimal point space end string sFor example 1 3 s 13 2 05 s 205return list string represent possibility original coordinate beenOur original representation extraneous zero start number like 00 00 000 10 001 0001 number represent few digit also decimal point number occur digit occur start number like 1the final answer list return order all coordinate final answer exactly space occur comma Example 1input s 123output 1 231 2312 312 3example 2input s 0123output 0 1230 1230 12301 2301 23012 3explanation 00 00 0001 0001 allowedexample 3input s 00011output 0 00110001 1 constraints4 slength 12s0 sslength 1 the rest s digit