7th PC Patterns
Let's assume that you are attempting consecutive 4-height PCs. Each 4-height PC requires 10 pieces, and each bag has 7 pieces. Therefore, you can complete a full loop on your 7th PC because 70 pieces (10 pieces × 7 PCs) are divisible by 7, a whole bag. This makes the 7th PC unique—the 7th PC being on the end of the loop means that it can be thought of 3 leftover pieces + 7 pieces from the 10th bag.
This page lists some patterns that you could use for your 7th PC. However, it is by no means comprehensive, i.e., it will not cover every possible 3 piece combination. If interested, a good supplementary page to look at could be knewjade's Best Chance Field.
Summary
Non-Duplicate Pieces
With I
IJO 1 IJO 2 IJT 1 IJT 2 IJS 1 IJS 2 IJZ IJL 1 IJL 2 IOS IOT ITS 1 ITS 2
No I
JLO 1 JLO 2 JLS JLT JOT JOS JOZ JTZ JST OST STZ
Duplicate Pieces
IIJ IIO IIT IJJ JJL JJO 1 JJO 2 JJS JJT JJZ JOO 1 JOO 2 JTT 1 JTT 2 OOT OTT TZZ
100% Patterns
Every pattern shown here has a 100% chance of PC.
1
OST2
ITZ3
IST4
IJTJLT
JST
See below for an alternate pattern that you can use for IJT
5
JLOJLS
JJO
JJZ
6
JLO7
IOT8
JOTJTZ
9
IOS10
STZTZZ
11
LOZTTO
ILZ
IJO
JTT
12
JOZIJZ
IJS
JOO
13
IITJJT
OOT
14
JJSIJL
JTT
15
IIOJJO
16
IILJJL
LOO
IJO
17
IJT18
IJLILL
Non-100% Patterns
1 (97.38%)
JSZILZ has a corresponding 100% pattern.
2 (99.52%)
ISZ3 (89.13%)
OSZSee Also / References
- Nilgiri's tweet on ITZ. Ogonek:Macron's tweet on ILT. Credit to JimothyJimothy for the second IJL. Rest of the patterns found by cosin307.
- All Duplicate Pieces Patterns: Thanks JimothyJimothy for the fumen