Representative district 78 shall consist of the following voting districts in Johnson county: (001030), (001040), (001050); and the following blocks in voting district (001070), tract 0535.08, block group 1, in Johnson county: block 000, block 001, block 002, block 003, block 004, block 005, block 006, block 007, block 008, block 011, block 012; and the following blocks in voting district (001070), tract 0535.08, block group 3, in Johnson county: block 000, block 001, block 002, block 003, block 004, block 005, block 006; and the following voting districts in Johnson county: (001100), (001320), (001330), (001350), (001380), (001390); and the following blocks in voting district (900600), tract 0535.09, block group 2, in Johnson county: block 017; and the following blocks in voting district (900600), tract 0535.09, block group 4, in Johnson county: block 002, block 004, block 005, block 006, block 010, block 011; and the following voting districts in Johnson county: (900820), (900850); and the following blocks in voting district (900860), tract 0535.59, block group 1, in Johnson county: block 030; and the following blocks in voting district (900860), tract 0535.60, block group 2, in Johnson county: block 008, block 009, block 010, block 012, block 014, block 015, block 016, block 017; and the following blocks in voting district (900860), tract 0535.60, block group 3, in Johnson county: block 013, block 014, block 015, block 017, block 018, block 019, block 020, block 021, block 022, block 023, block 024; and the following voting districts in Johnson county: (900920), (900930), (901680), (920220), (920590), (920820).